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. PATENTED FEB. 16, 1904.

BLF. Meanings-s. v SHEDDING MECHANISM FOR ooms.

.APPLIUATIOH FILED MAY'29. 1903.

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APPLIOATION FILED MAY 29. 1903.

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UNITED STATES retested February. ie, 1904.

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BENJAMIN E. MoGUINESS, E GRAFTON, MASSACHUSETTS. As'SIGNoE fro OROMPTON & KNOWLES LOOM WonKS, or WORCESTER, MASSACHU- SETTS, A CORPORATION or MASSACHUSETTS.

SHEDDING MEoHAmsMF oR Looms.

SPECIFICATION a n part of Letters Patent No. 752,352, dated February 16, 1904.

Application filed m 29,1903- To aZZ whom it may concern:

Be it known that I, BENJAMINF. McGuinnss, a citizen of the United States, residing at Grafton, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Shedding Mechanism vfor Looms, of which the following is a specification. i

My invention relates to shedding mechanism of looms, and more particularly to improvements to be combined with and used on a dobbv whichoperates the heddle-frames or harnesses in the well-known way.

In the ordinary construction of a dobby the indicator levers or fingers, which-indicate for the harnesses desired, are raised by the pattern-pins on the chain-bars'as the chain-cylinder revolves, the pins being arranged in single rows for a single-index chain and in double rows for a doubleindeX- -chain. The weight of the indicator levers'or fingers is considerable, and consequently there 'ispres sure on the pattern-pins causing friction "and wear of the pins and the levers and also of the bearings of the pattern-chain cylinder.

In order to accommodate a large number of indicator-levers, they have to be made quite thin, so that the surface presented to the pattern-pins is narrow, and the levers are able to slip ofi of the pins or fail to be engage and raised by them. I

One object of my'invention is to provide means for automatically raising all the indicator levers or fingers at regular intervals or at every pick and to hold them in raised position and above the pattern-pins on the pattern-chain as the pattern-chain cylinderre-v volves and carries thepattern-pins intoposition under the indicator-levers or out from under said levers and then release said levers and allow them to drop by gravity onto-.thepattern-pins ready to be engaged or onto the ordinary stop-bar. By this construction the weight of the indicator levers or finger's is entirely removed from the pattern-pins as the pattern-chain cylinder revolves to. bring the Serial No. 159,292. (No model.)

pattern-pins into position to engage certain of the levers or to move the pattern-pins out of engagement with said levers.

-Another object of. -my invention is to provide means for holding the free ends of the indicator levers or fingers inv raised position when-not'in use and also to provide means for holding the hook-latches in. inoperative position when not in use, as will be hereinafter described.

My invention consists in. certain novel featuresofconstrnction of my improvements, as will be hereinafter fully described. I have only shown in the drawings a detached portion of a dobby of well-known con struction withv myv improvements applied thereto; r I Referring tothe drawings, Figure 1 is a side elevation of adobby-frame and parts of a dobby with my improvements applied thereto. Fig. 2 corresponds to Fig. 1-, but shows adifierent position of some of the parts. Fig. 3-corresponds to Figs. 1 and 2, but shows a still difierent. position of someof the parts.

' I "Fig. i is a vertical section through the (lobbyframe and also showssome. additional parts not shown in previous-figures. Fig. 5,is, on an enlarged scale, a rear viewof the upper grate looking in the direction of arrow (t, Fig. 6. Fig. 6 is a vertical section on line v6 6, Fig. 5, looking in the direction of. arrow 6, same figure. The broken lines show the movable part of the grate in. its raised position. Fig. 7 is, on an enlarged scale, a rear view of the lower. grate looking in the direction of arrow 0, Fig. 8. V the parts shown in Fig. 7 looking in the direction-of arrow '61, same figure; and Fig. 9 is a bottom view of two of the indicator levers or fingers, showing the enlarged portions on the under surface.

In the accompanyingdrawings, 1 is adobbyframe of ordinary construction on whichare supported the several parts of the dobby mechanism in the ordinary way. The pattern-chain cylinder 2 is fast on a shaft 3, hav- Fig. 8, is-an edge view of jack l9.

ing bearings in stands, (not shown,) and has longitudinal grooves, in which extend patternchain bars 4, only one being shown, on which are in this instance two sets of pattern indicators or pins 5 and 6, arranged in two rows, forming a double index.

, Extending over the pattern-cylinder 2 are two sets of indicator levers or fingers 7 and 8. One set of levers, as 7, are acted on by the pins 5, and the other set, as 8, are acted on by the pins 6 on the pattern-chain bars 4 in the usual way.

The indicator levers 7 and 8 are loosely mounted on the transverserod or shaft 9, secured at its ends in the frame'l, and the outer ends of said levers when in their lowest position are supported on the transverse bar 10; which has pins 11 extending up therefrom between the levers 7 and 8 to guidesaid levers and hold them in position. The indicatorlevers 7 and 8 have upontheir lower surface or edge in this instance two enlarged portions or lateral extensions 7 and 8 to furnish a broader surface to'engage and rest upon the pattern-pins. (See Fig. 9.) The enlarged portions 7 and 8' are staggered on adjoining levers and the thickness of the levers is reduced or cut out between the enlarged portions, so that said levers can pass each other without interference.

The inner ends 7 of the indicator-levers 7 extend beyond the supporting-shaft 9 and in a substantially horizontal plane, while the inner ends 8 of the levers 8 extend upwardly above the ends 7 of the levers 7, as shown in Fig. 4. The inner ends of both sets of levers 7 and 8 extend through slots in the lower grate or rack in the usual way.

The rack 20 embodies another feature of my invention and will be hereinafter described.

Arranged over the two sets of levers 7 and 8 are the upper and lower sets of hook-latches 11 and 12, Fig. 4, which hook over and are operated by the upper and 'lower slide-bars 13 in the usual way. The slide-bars 13 are connected by links 14 with the rocker-lever 15,fast

on the shaft 16,and connected with some driven part of the loom to have a regular rocking motion in the ordinary way. The upper hooklatches 11 are operated by the set of indicatorlevers 7 through the upright lifting-wires 17, while the loWerhook-latches 12 are operated by the set of indicator-levers 8, which are in direct contact with said latches in the usual way. The hook-latches l1 and 12 are pivoted at their inner ends on the connector 18, centrally pivoted at 18 on the harness lever or (Partially shown in Fig. 4.) Said latches 11 and 12 at their front ends extend through the upper grate 21 and lower grate 20, respectively.

All of the above parts may be of the ordinary construction and operation except the construction of the indicator levers or fingers already referred to and the construction of the grates 20 and 21.

I will now describe the mechanism for automatically raising all of the indicator levers or fingers 7 and 8 at every pick or desired intervals during the operation of the loom and holding them in raised position during the partial revolution of the pattern-cylinder 2 to allow the pattern-pins 5 and. 6 to pass under the indicator-leversto be in position to be engaged thereby on the dropping of the levers or to pass from under the levers to allow the same to drop on the stop-bar 10. A rod 22 extends transversely under the indicator-levers'7 and 8 at their outer ends and is supported at each end in a lever 23, (only one lever is shown in the drawings,) said levers 23 being pivotally mounted on the transverse shaft 9. To raise the rod 22 and cause it to raise and hold in raised position all the indicator-levers 7 and 8 and also to lower said rod 22 to release and allow the indicator-levers to drop, I use in this instance the mechanism shown in the drawings, consisting of a lever 24, pivotally connected at one end to the rod 22 and pivotally connected at its other end to the end of a lever 25, which is pivotally mounted on a pin 26 on the frame 1. A link 27 is pivotally connected at one end to the lever and is slotted at its other end and adjustably connected by a bolt 28 with a lever 29, pivotally attached by a bolt 30 to the rocker-lever 15. When .the rocker-lever 15 is in either of its extreme positions,(shown in Figs. 1 and 3,) the rod 22, through the mechanism connected with said lever, will be in its highest position and holds the indicator-levers 7 and 8 in their raised position and above and out of engagement with the pattern-pins on the pattern-chain. As the rocker-lever 15 begins to move from either extreme position, (shown in Figs. 1 and 3,) the rod 22 will commence to be lowered, and when the rocker-lever 15 reaches its intermediate position (shown in Fig. 2) the rod 22 will be in its lowest position, leaving the indicatorlevers 7 and 8 free to rest on the pattern-pins 5 and 6 or on the transverse supporting-bar 10, as shown in Fig. 2. It will thus be seen that through the movement of the rocker-lever 15 the rod 22 will be raised at regular intervals and carry up with it and support above the pattern-pins all of the indicator-levers 7 and 8 during each partial revolution of the pattern-cylinder 2, and said rod 22 will then be lowered and allow the indicator-levers 7 and 8 to drop upon the pattern-pins and become operative or to rest upon the supporting-bar 10. e

I preferably combine with the rod 22 at each end, to be raised and lowered with said rod, a leaf-spring 31, which is adapted to engage at its free end and bear upon the ends of the pattern-bars 4 to hold them down in their recesses and in proper position as the pattern-cylinder 2 revolves to bring the pins on the patternloars under the indicator-levers.

I preferably make the indicator-levers '7 and 8 with an. extension or hook 7' and 8 on their outer ends and also'provide a transverse rod 32, removably supported in the upper end of a bracket 33, in this instance secured to each end of the transverse bar 10. By means of the rod 32 and the projections '7' and 8' on the indicator-levers 7 and 8 the indicator-levers when not in use may be held in an inoperative position, as shown in Fig. 4, the rod 32 being withdrawn or removed and the indicator-levers 7 and 8, which are not to be used, being raised by hand and held in a raised position and then the rod 32 inserted to extend below the projection 7' and 8' on said levers to hold the levers in an inoperative position. I also provide means for holding the upper hook-latches 11 and the lower hook-latches 12 in inoperative position when not in use. In this instance I make the lower grate 20 in two parts, the upper part 20 being pivotally connected to the other or main part by pins 20" and adapted to have a swinging motion thereon. per part 20, (shown at the left in Fig. 7 and also shown in Fig. 8,) adapted to be engaged by the operator to move the upper part 20 on its pivotal supports.

Every other bar 20' of the grate 20 is made with two side extensions or projections 2O thereon, adapted to receive and hold a hooklatch 12, as shown in Fig. 7, while the intermediate bars 20 do not extend to the top of the grate. On the upper hinged section 20 of the grate are projections 20", which are adapted to engage the upper ends of the bars 2O on the grate proper, as shown in Fig. 7 The moving of the upper part 20 of the grate on its hinged connection will move the projections 20 away from the bars 20 of the grate proper and allow the ends of the hooklatches 12 to be moved up between the bars and onto the extensions 20 on the bars 20',

' as shown in Fig. 7.

The upper grate 21 is constructed in the same way as the lower grate 20, as above describedthat is, there is a part 21 pivotally connected by pins 21" with the main part of the grate and adapted to be moved thereon, as shown by broken lines in Fig. 6, and every other bar 21 of the main grate 21 has side projections 21 thereon to receive an upper hooklatch 11, as shown, and the intermediate bars 21 are made shorter and adapted to be engaged by projections 21 on the hinged portion 21, as shown in Fig. 5.

I have shown in the drawings my improvements applied to a double-index pattern-chain; but it will be understood that a single-index pattern-chain may be used and my improve- There is an upward extension on the up ments may be adapted to be applied to any well-known form of dobby mechanism.

It will be understood that the details of construction of my improvements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire to secure'by Letters Patent, is

1. In a dobby, the combination with the pattern-chain cylinder, and pattern-indicators, and the indicator levers or fingers extending over the pattern-indicators, of means for automatically raising all said indicator levers or fingers at every pick, and holding them above the pattern-indicators, during a partial rotation of the pattern-cylinder, substantially as shown and described. V

2. In a dobby, the combination with the pattern-chain cylinder and pattern-indicators, and the indicator levers or fingers extending over the pattern-indicators, of means to automatically raise all of said indicator levers or fingers at desired intervals during the operation of the loom and hold them above and out of engagement with the patternindicators during a partial rotation of the pattern-cylinder, substantially as shown. and described.

3. In a dobby, the combination with the pattern-chain cylinder and pattern-indicators, and the indicator levers or fingers extending over the pattern-indicators, of means to automatically raise all of said indicator levers or fingers at every pick and hold them above and out of engagement with the pattern-indicators during a partial rotation of the pattern-cylinder, and allow all of them to drop to engage the pattern-indicators, or the stop-bar, sub stantially as shown and described.

4:. In a dobby mechanism, the combination with a rotatable pattern-chain, and patternpins thereon, and indicator levers or fingers extending over the chain, of a rod or bar extending under the free ends of said indicator levers or fingers, and means for automatically raisingand lowering said bar at every pick, to raise and hold the indicator-levers above and out of engagement with the pattern-pins during a partial rotation of the pattern-chain,

and allow all of them to drop into engagement with the pattern-pins, orthe supporting-bar, substantially as shown and described.

5. In a dobby mechanism, the combination with the pattern-chain, and pattern-pins thereon, and indicator levers or fingers pivotally mounted over said chain, of a transverse rod 1 6. In a dobby mechanism, the combination with indicator levers or fingers provided with hooks or extensions on their free ends, of a transverse removable rod or bar to extend under said extensions or hooks, and support the indicator levers or fingers in an inoperative position, substantially as shown and described.

7. In a dobby mechanism, the combination with the pattern-chain, the indicator levers or fingers, and the lower hook-latches, of a grate through which the ends of the indicator levers or fingers and the free ends of the-hook-latches extend, said grate made in two parts, one part pivotally attached to the other part and having projections thereon, and adapted to have a swinging motion, and some of the bars of said grate having side extensions to support the hook-latches in inoperative position, substantially as shown and described.

8. In adobby, hook-latches, agrate through which the free ends of the hook-latches extend, said grate made in two parts, one .part pivotally attached to the other, and adapted to swing thereon, and provided with projections to engage some of the vertical divisions or bars of said grate, and the other bars of said grate provided with side extensions to support the hook-latches, substantially as shown and described.

9. In a shedding mechanism for looms, the combination of a patternsurface, indicator fingers or levers disposed in operative relation thereto, and means for automatically moving all said indicator fingers or levers at desired intervals during the continued operation of the loom from operative engagement with the pattern-surface, and holding them in such position during a part of the indicating movement of the pattern-surface and thereafter permitting all of said fingers or levers to resume operative engagement with relation to the pattern-surface.

10. In a dobby mechanism, the combination with the pattern-surface, the indicating fingers or levers, and hook-latches, of a grate through which the ends of said fingers or levers-extend, some of the bars of said grate having projections for supporting hooklatches engaged thereby out of operative position.

B. F. MGGUINESS. Witnesses:

J. C. DEWEY, M. HAAS. 

